Interface: Aggregate

Author: Eugene Shvets This interface allows users to create custom aggregates. All built-in aggregates conform to this interface.

Components providing this interface:

tos.lib.TinyDB.Aggregates.AvgM
tos.lib.TinyDB.Aggregates.CountM
tos.lib.TinyDB.Aggregates.ExpAvgM
tos.lib.TinyDB.Aggregates.MaxM
tos.lib.TinyDB.Aggregates.MinM
tos.lib.TinyDB.Aggregates.SumM
tos.lib.TinyDB.Aggregates.WinAvgM
tos.lib.TinyDB.Aggregates.WinCountM
tos.lib.TinyDB.Aggregates.WinMaxM
tos.lib.TinyDB.Aggregates.WinMinM
tos.lib.TinyDB.Aggregates.WinSumM

Components requiring this interface:

tos.lib.TinyDB.Aggregates.AggregateUseM

Commands

• result_t merge (char *destdata, char *mergedata, ParamList *params, ParamVals *paramValues) dest, merge - raw data.

• result_t update(char *dest, char *value, ParamList *params, ParamVals *paramValues)
• result_t init(char *data, ParamList *params, ParamVals *paramValues, bool isFirstTime) Called in the beginning of each epoch

  Parameters:

  isFirstTime - true if this is the very first call for this aggregate

• short stateSize(ParamList *params, ParamVals *paramValues)
• bool hasData(char *data, ParamList *params, ParamVals *paramValues)
• TinyDBError finalize(char *data, char *result_buf, ParamList *params, ParamVals *paramValues)

merge